Write a research abstract about this title: "As a solvent for cleaning laboratory glassware, grapefruit extract is used" Note: 5-10 sentences are enough.
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Write a research abstract about this title: "As a solvent for cleaning laboratory glassware, grapefruit extract is used"
Note: 5-10 sentences are enough.
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- On a paper, draw a schematic diagram on the Extraction of Flavonoids using the procedures stated below. Procedure: Extraction of Flavonoids Weigh 10 g of the shade dried plant sample and chop into small pieces. Macerate with 200 mL 70% ethanol for 3 days at room temperature (25°C). Filter the extracts in vacuum using Whatman filter. Evaporate to dryness. Weigh the residue and compute the percentage yield.Write the procedure for the following 1. Celloidin embedding 2. Vacuum embedding 3. Epoxy embedding 4. resin embeddingLaboratory Report Sheet – ENZYMES Procedure: Potato Peroxidase a. Prepare 3 test tubes. Place 1 mL of potato extract to each test tubes. To the first test-tube - add 5 drops of 1% phenol+ 3 drops of H2O2 second test tube – add 5 drops of catechol or pyrogallol + 3 drops H2O2 third test tube - add 5 drops of guiac solution + 3 drops H2O2 b. Shake well and observe change in color. 2. Repeat procedure 1, a, b, and c, but this time use boiled potato extract. QUESTION: WHAT ARE THE OBSERVATIONS FOR EACH TUBE?
- Observe and sketch buds on the image of Mnium. Label the image.A plant isolate was subjected to qualitative tests to determine the presence of macromolecules. Below is a summary of results obtained: Biuret Ninhydrin Schiff's Test for Test for Deoxyribose Phosphat test test test Violet Violet Pink Blue Yellow solution solution solution solution precipitat To form a definitive conclusion about the isolate, what additional test is needed (if any)? O Wheeler-Johnson Test Sakaguchi Test Molisch Test Dische Diphenylamine TestThe nutrient broth is a basic media used for growing a broad variety of microorganisms in the laboratory. The nutrient broth consists mainly of 1.5g * L ^ - 1 extract, 3g * L ^ - 1 yeast extract and 5g * L ^ - 1 sodium chloride dissolved in distilled water. The nutrient agar is prepared by adding the agar at the desired amount into nutrient broth. Answer the following questions. marks) a) How would you prepare a 500 ml nutrient broth? b) How would you prepare 2% (w / v) nutrient agar for 1L? c) How would you prepare a 100 ml nutrient broth supplemented with 100mu * g / m * l ampicillin antibiotic? The stock concentration for ampicillin solution is 100mg / m * l .
- An ion exchange resin prefers calcium over magnesium, indicated by Xcalcium = 0.6 and Ymagnesium = 0.3. The same resin prefers magnesium over sodium, indicated by Xmagnesium = 0.6, Ysodium= 0.2, What is the separation factor for the resin for calcium over sodium?Choose the best biomaterials (Metal, Polymer, Ceramic) for the following applications with the at least three reasons.1. Write briefly about Metabolism of drugs ( just 5 lines ) 2. Write briefly about Polyethylene glycol ( just 3 lines ) 3. The levigating agent , explain about its role in Suppositories manufacturing 4. Write in details about types of gel 5. Write in details about fusion method in ointment preparation
- Nutrient Agar (NA) is a general purpose medium used for the cultivation of a wide variety of non- fastidious microorganisms (Merck, 2000). Its ingredients are listed in Table 2. You are tasked to prepare 300ml of NA, determine the amount of ingredients and write in column 3 in Table 2. Show your calculations. *A sample calculation was made for you. Peptone = 300 ml x 0.5% = 1.5 g Table 2. Medium Composition of Nutrient Agar (NA) with the recommended proportions (Merck, 2019) Ingredients In % In Grams/300ml Peptone 0.5 *1.5 Meat extract 0.3 Agar 1.5 Distilled Water As neededWrite the procedure for the following embedding. a. Celloidin embedding b. Vacuum embedding c. Epoxy embedding d. Resin embeddingThe directions of Mannitol Salt agar was “suspend 28.9 grams in 1000 ml distilled water”. You will prepare 25 petri dishes of this medium, how many ml of distilled water do you need and how many grams of medium do you need to prepare? Show your solution.